>>225
mouse movements for touchpads are relative, so you'd need to aim just like on a mouse, except slower. and a big enough movement combined with an insensitive enough mouse configuration might mean you'll run out of space on the touchpad, and your hand will need to travel all the way back to the start of the touchpad and then drag it again to complete the movement.
of course it depends on your settings i guess, but it was pain for me.

touchpads are fine for work though, if your desk, chair and tablet are positioned correctly, they are comfy. especially the apple one, or the wacom pen&touch, which are big with a lot of travel room.